Device for advancing a board to cut-off saws



- March 19, 1935. H, MILLER DEVICE FOR ADVANCING A BOARD TO CUT-OFF SAWS Filed July 25, 1935 INVENTOR Patented Mar. 19, 1935 "warren STATES TE,

DEVICE non ADVANCING A BOARD T0 CUT-OFF sAWs Theodore H. Miller, Walla Walla, Wash; Application 11113 25, 1933, Serial No. eta-04a 5Glaims. (01 144-253) r orgies My invention relates to improvements in the cientto hold the stock against the 'bottomstock method of fecding'stock tocut-ofi saws and seeks guide 23. Extending beyond the overhang is a to provide means by which the component cuthinged dog clamp 14 as shownin Figure, 2 and tings may bequickly obtained from lumber strips Figure 3, serving when set in combination with of indiscriminate grade. It 'furtherseeks to inthe pressure rolls 6 to hold the stock firmly '5 sure squarely sawn ends on said cuttings. by against the slidable hand clamp. Small work shortening the necessary travel of the saw. while dogs 26'prevent any movement of theboard be-i expediting the cut to the point of eliminating yond that of the slidable hand clamp. Extendthe 'operators tendency to crowd the same. It ing ahead of the slidable hand clamp 12 and :on

also seeks to insure cuttings of accurately gauged line with the dog clamp 14 is an indicator arm 10.

length without interrupting the flow of stock and indicator15 as shown in Figure 3, approachto the saw. ing the saw as near as possible when the slid- These objects are preferably attained by an able hand clamp is fully advanced and set so advancing device, designed to handle the, stock as to reflect to the operator the-approximateline on edge, in conjunction with a horizontally travof the saw travel against the face of the stock. 15.

elling trim saw of the pedal operated type (not Penetratingthe outer faceof the sliding hand shown). The advancing device is illustrated in clamp is a recoil pin 16, engaging the notched the accompanying drawing, in which: gauge bar 22when depressed. Figure 1 is an isometric viewof the complete At the rear ofthe bed plate l-is positioned the advancing device; Figure 2 is a cross section of mirror mount 10 supporting the mirror 11, as

the complete advancing device; and Figure 3 is best shown in Figure 1, which reflects to the opa front elevation of the slidable hand clamp. erator the inner or grade :face of the stockand Similar numerals refer to like parts thruout the position of any defects in relation to the the several views. indicator 15 carried by the slidable hand clamp My device is intended for use with conventional as the clamp is retarded. 25 cut off saws of the horizontally travelling type The ball bearing pressure rolls 6 serve to hold and the saw for the purposes of this specification the stock firmly against the stock guide 24 the is assumed to be set close to the further end of angers being actuated by the adjustment ew the device operated at a 90 degree angle to the 9 operating in conjunction with the expansion advance of the board so as to strike the broad spring 8 against the flanged rod '7 terminating side of the same. The saw will be preferably in the hanger of each, as shown in Figure 2. operated by a foo-t pedal convenient to the op- The notched gauge bar 22, accurately notched erator. for the desired combination of measurements, is

The bed plate 1 as shown in Figure 1 is formed tightly fitted to the groove 3 and when set, will, so as to provide channels 2, for the reception of accurately in combination with the recoil pin the travel guides 21 aflixed to the base of the 16, limit the retarding movement of the indislidable clamp 12, a groove 3 in which is seated cator. Let it here be understood that the bar the notched gauge bar 22, a groove 4 to admit must beset to allow for the space of one saw the stock guides 23 and 24, a groove to admit kerf in addition to each measurement. 7

the mirror mount 10, and a number of trans- In operation the stock is drawn along the stock verse bores terminating in open grooves to admit guides by means of the slidable hand clamp 12 the pressure roll assemblage 6. with the hinged dog clamp 14 set, the dogs 26 Positioned upon the bed plate 1 as shown in restricting the movement of the stock relative to Figure 1 is the reciprocating hand clamp 12, the travel of the hand clamp. With the firstcut formed to fit the hand and of such dimensions made to trim the end of the stock, the hinged as to be easily operated yet firm in its support dog clamp is released by means of a hand strap, of the stock. It travels the length of the bed and the slidable hand clamp retarded, the board plate positioned by the travel guides 21 operatbeing held stationary by the pressure rolls 6 in ing in the channels 2, its travel towards the saw combination with the stock guide 24 until the being limited by the stop 19, attached to the sliddicator 15 as reflected in the mirror approaches 0 ing hand clamp, meeting the stop 20, attached a defect on the face of the stock as reflected to the bed plate. Its inner face is cut away to in the mirror, when the recoil pin 16 is depressed allow clearance for the stock guide 24 and so to engage the nearest notch on the gauge bar as to fit flush against the outer face of the stock. 22. The hinged dog clamp 14 is then set and It overhangs the stock as shown in'Figure 2 suffithe sliding hand clamp ad y ng with it the board until the stop 19 strikes the stop 20, and the cut is made. If suflicient tension be applied to certain of the pressure rolls 6 the stock will not move while the hand clamp is being retarded. The defect mentioned will on the next stroke be eliminated by a slight retarding and advancing movement sufiicient to cover the defeet, which will be trimmed oil, leaving another clear cut exposed. Q

It should be noted that clear cuttings and cuttings of indiscriminate grade may in like manner be segregated and should rolls be placed un-;

der the bed plate 1 to permit its transversev movement they could be fed to the saw so as to emerge from the saw onto two parallel conveyors. Conventional conveyors may be used to remove the cuttings from beyond the saw allowing the short waste cuts to drop. 7

It is now evident that with the saw set level at a 90 degree angle to the movement of the stock, with the stock guide 23 horizontal, and the stock firmly supported that all cuts must to practical purposes be square. It is further evident that with the reduced arc thru which the saw must swing the operator has little tendency to crowd the out. It isfurther evident that with the indicator the operator can approximate the length of the cut to be taken and can accurately gauge the same without interrupting the flow of the V stock to the saw materially or concerning himself with the pieces trimmed off as is the case when conventional stops on the opposite side of the saw are used.

Having thus described my invention I claim:

7 1. In a device for advancing a board on edge to a cut oil saw for successive trims of varied length the combination of a saw plane indicator attached to a slidable hand clamp forming a lateral abutment at one face-side of the board and a mirror so positioned that the position of the indicator is reflected with the outermost side of the board in the background.

2. In a device for advancing stock to a cut off saw, aside guide to guide the stock, pressure rolls to hold the stock against the side guide on edge, a hand clamp slidable within the guide and forming a lateral abutment for one side face of the stock, a portion of the clamp overhanging the stock, an indicator mounted on said clamp adjacent the saw when the clamp is fully advanced, and a mirror positioned to reflect one side face of the stock and also the indicator against same as the clamp is moved away from the saw.

3. In a device for advancing a board to a cutoff saw having in combination an indicator, a reflector in which said indicator is visible, a slidable hand clamp attached to the indicator, said indicator being adjacent the saw when the support is fully advanced and adjacent one surface of the board throughout the movement of the clamp. '4. In a device for advancing a board to a cutoff saw, the combination of a board-supporting hand clamp movable parallel with the board, an indicator mounted thereon adjacent the saw when the support is fully advanced and adjacent one face side of the board at all times, a reflector in which said indicator is visible to the operator, a normally retracted pin capable of being moved below the bottom of said clamp, and a series of stops so positioned along the path of said clamp as to be in line with the pin.

5. In a device for advancing work to a cut-oil saw, a side guide to guide the work, pressure rolls to hold the work on edge against the guide, a mirror to reflect one'side face, of the work as it is advanced along the guide, a support adjustable along the guide and forming a'lateral abutment for the other side face of the work, a portion of the support overhanging the work, and anindicator mounted thereon to indicate a desired saw line in the mirror.

THEODORE H. MILLER. I 

